diff --git a/debian/changelog b/debian/changelog
index 6565ef0..1076e1f 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+deepin-pdfium (1.5.6) unstable; urgency=medium
+
+  * update version to 1.5.6
+
+ -- zhanghongyuan <zhanghongyuan@uniontech.com>  Thu, 16 Oct 2025 22:49:08 +0800
+
 deepin-pdfium (1.5.5) unstable; urgency=medium
 
   * update version to 1.5.5
diff --git a/debian/control b/debian/control
index f67ce39..de1944d 100644
--- a/debian/control
+++ b/debian/control
@@ -8,6 +8,7 @@ Build-Depends: debhelper (>= 11),
  qt6-tools-dev-tools,
  qtbase5-dev,
  qttools5-dev-tools,
+ pkg-config,
  libjpeg-dev,
  libicu-dev,
  libpng-dev,